4 sub { 'ffkk/perl' . rec('000') },
9 sub { 'ffkk/perl' . rec('000') },
11 sub { first(rec(200,'a')) . ' ' . first(rec('200','e')) },
14 sub { "ffkk/perl" . rec('000') },
23 sub { first(rec('200','a')) . ' ' . first(rec('200','b')) },
25 sub { rec('245','a') },